NiPlanarCollider - nif.xml fix
<niobject name="NiParticleModifier" abstract="0" inherit="NiObject">
A particle system modifier.
<add name="Next Modifier" type="Ref" template="NiParticleModifier">Next particle modifier.</add>
<add name="Controller" type="Ptr" template="NiParticleSystemController" ver1="4.0.0.2">Points to the particle system controller parent.</add>
</niobject>
<niobject name="NiParticleCollider" abstract="1" inherit="NiParticleModifier">
A particle system modifier.
<add name="Bounce" type="float">strength of reflection for particles</add>
</niobject>
<niobject name="NiPlanarCollider" inherit="NiParticleCollider">
<add name="Height" type="float"></add>
<add name="Width" type="float"></add>
<add name="Position" type="Vector3"></add>
<add name="X Axis" type="Vector3"></add>
<add name="Y Axis" type="Vector3"></add>
<add name="Plane" type="NiPlane"></add>
</niobject>
